adrhill

using Images, TestImages

img = testimage("cameraman")
img = convert.(RGB{N0f8}, img)

open("cameraman.ppm", "w+") do io
    println(io, "P6")
    println(io, size(img, 2), " ",  size(img, 1))
    println(io, 255)

adrhill

P6
512 512
255
œœœ   ŸŸŸžžžœœœ›››œœœžžžœœœŸŸŸžžžžžžœœœžžžžžžŸŸŸŸŸŸ               žžžžžž   £££¢¢¢¢¢¢¢¢¢¢¢¢      ¡¡¡£££¡¡¡   ¢¢¢¦¦¦¤¤¤£££¡¡¡¡¡¡¢¢¢£££¡¡¡¡¡¡¢¢¢¤¤¤¥¥¥¦¦¦¤¤¤¢¢¢      ¢¢¢¥¥¥¥¥¥¥¥¥¤¤¤¥¥¥¥¥¥§§§¦¦¦¤¤¤£££¤¤¤¤¤¤¥¥¥¦¦¦§§§¦¦¦¥¥¥¥¥¥¥¥¥££££££¦¦¦ªªª¨¨¨¦¦¦¦¦¦§§§¦¦¦§§§¨¨¨ªªª©©©¨¨¨¨¨¨©©©§§§¦¦¦§§§©©©¨¨¨¦¦¦§§§ªªª©©©©©©¨¨¨©©©ªªª«««ªªª©©©ªªª¬¬¬ªªª©©©ªªª«««ªªª©©©¨¨¨©©©«««­­­­­­®®®®®®­­­«««««««««­­­®®®°°°¯¯¯®®®®®®°°°²²²´´´³³³³³³²²²²²²±±±²²²³³³¶¶¶µµµµµµµµµµµµ²²²°°°²²²¶¶¶³³³²²²²²²³³³³³³´´´´´´´´´´´´´´´²²²±±±µµµ¸¸¸¶¶¶µµµµµµ¶¶¶¶¶¶···¶¶¶¶¶¶¶¶¶···¶¶¶¶¶¶µµµ¶¶¶¶¶¶···¶¶¶¶¶¶···¹¹¹¸¸¸···µµµµµµ´´´µµµµµµ···¸¸¸¹¹¹·········¸¸¸·········¹¹¹¹¹¹ºººººº»»»¹¹¹¸¸¸¶¶¶¶¶¶¶¶¶¸¸¸¸¸¸ººº¹¹¹¹¹¹···¶¶¶¶¶¶···¸¸¸»»»¹¹¹¶¶¶¶¶¶¸¸¸¹¹¹»»»ººº¹¹¹ººº¼¼¼ººº¹¹¹¸¸¸¹¹¹ººº»»»¹¹¹¸¸¸···¸¸¸µµµµµµ···ººººººººººººººº¶¶¶´´´···»»»¹¹¹¶¶¶µµµµµµ···¹¹¹¸¸¸···µµµ³³³³³³µµµµµµ¶¶¶µµµµµµ···¹¹¹···¶¶¶¸¸¸ººº¸¸¸¶¶¶µµµµµµ¶¶¶···¶¶¶¶¶¶µµµµµµµµµ¶¶¶µµµ´´´³³³³³³´´´¶¶¶³³³±±±²²²´´´´´´µµµ³³³²²²±±±²²²³³³´´´³³³³³³³³³´´´²²²±±±±±±²²²³³³µµµ´´´²²²°°°°°°±±±²²²¯¯¯®®®¯¯¯±±±²²²²²²¯¯¯­

adrhill

# ]add https://github.com/IanButterworth/VideoInTerminal.jl
# ]add ImageCore
# ]add ColorSchemes
using VideoInTerminal
using ImageCore
using ColorSchemes

"""
Count number of Mandelbrot iterations until `threshold` is crossed,
up to a maximum of `maxits`.

adrhill

# ]add https://github.com/IanButterworth/VideoInTerminal.jl
# ]add ImageCore
using VideoInTerminal
using ImageCore

"""
Run n Mandelbrot iterations.
"""
function mb_iterations(c::AbstractArray{T}; n=50) where {T<:Complex}
    z = zeros(T, size(c))